Final answer:
Neuronal communication can occur either chemically between neurons at a chemical synapse or electrically within neurons at an electrical synapse. Chemical synapses use neurotransmitters, while electrical synapses allow direct ionic transfer through gap junctions.
Step-by-step explanation:
Neuronal communication that is facilitated chemically happens between the neurons, whereas facilitated electronically happens within the neurons. In a chemical synapse, neurotransmitters are released from the presynaptic neuron and travel across the synaptic cleft to affect the postsynaptic neuron.
This process involves the conversion of an electrical signal into a chemical signal, which then triggers a response in the receiving neuron. Conversely, in an electrical synapse, there is a direct physical connection between neurons through gap junctions allowing ions to flow directly from one neuron to another, facilitating a faster electrical signal transfer.
Electrical synapses are important for synchronizing the electrical activity of neuron groups and are involved in certain reflexes and sleep regulation.